Patent US2828873A successfully refreshed from Google Patents.
US2828873A
Expired / Lapsed
US
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Material flow control system
Assignee: Individual
•
Filing: 1957-01-07
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Granted: 1958-04-01
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Expires: 1977-01-07
Abstract
No abstract record available.
Inventors
- 👤 Max M Arlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:18
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/02; B65G47/16; B65G47/18; B65G47/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2124018A
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US2221396A
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US2328240A
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US2360583A
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US2412137A
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US2415328A
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US2430407A
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US2470922A
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US2618395A
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US2552930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |